Zobrazujú sa: Spojené štáty - letecká pošta - známky (1918 - 2012) - 4 známky.
13. október WM: nikto Dizajn: Sante Graziani Rytina: Sante Graziani Perforácia: 11
![[Philip Mazzei, typ BS]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/BS-s.jpg)
![[Philip Mazzei, typ BS1]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/BS1-s.jpg)
30. december WM: nikto Perforácia: 11
![[Aviation Pioneers, typ BT]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/BT-s.jpg)
![[Aviation Pioneers, typ BU]](https://www.stampworld.com/media/catalogue/United-States/Airmail-stamps/BU-s.jpg)
